Bus



FIG. 1 is a front elevation view of a bus in accordance our design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a front perspective view thereof; and,

FIG. 7 is a rear perspective view thereof.

The broken lines in the drawings illustrate portions of the bus thatform no part of the claimed design.

CLAIM The ornamental design for a bus, substantially as shown anddescribed.